Car-underframe.



H. M. PFLAGER.

GAR UNDERFRAME.

PPLIOATION FILED JUNE 5, 190e.

91 6,586. Patented Mar. 30, 1909.

. 2 SHEETS-SHEET 1.

v No. 916,586.

UNrrnD srri'rns PATENT ormoni.

HARRY M.

PFLAGER, OF ST. LOUIS, Ml'SSOURl, ASSIGNORTO TRA'NSOM DRAFT GEAR COM- 'PANY, OF ST. LOUS, MISSOURI, A CORPORATION OF DELAWARE.

oAaUNDERFRAME.

Speeication of Letters Patent.

'Patented March 30, 1909.

To all 'whoml it may concern: Be it known that I', HARRY M. PFLAGER, acitizen of the United States, residing at St. Louis, in the State of Missouri, have invent-` eda new and useful Improvement in Car- Underframes, of Which the following is a specication. e

My invention relates particularly to a Ine-- tallic car underframe having a single longitudinal .center sill extending between and adapted to butt endwise against the bodybolsters, to which the end ortions of the sill are riveted or otherwise ed; and my in Vention ,has for its objectto increase the efficiency and resistance of the 'underframe 'to v`the Stress of the draft-gear and abnormal end s hoek.

The invention consists in features of`nov- `Fltj'f as hereinafter described and claimed,

reference being had tothe accompanying drawing forming `part of this specification, whereon,

Figure 1, is a top lan view of one end and' adjacent portion o my improved metallic the underframe and draft-gear on line 2, 2,

-1` in Fig, 1; Fig. 3, a horizontal section thereof on line'3, 3, in-Fig. 2; Figs. L and 5, vertical jtransverse sections through the underframe and .draft-gear (omitting the springs) on lines 4, 4, .and 5, `5, in Figs. 2 and 3, and Fivs. 6 and-7, corresponding views to Fig. 2 vomitting the springs),showing 'modifications of the improvement.

vLike letters and numerals of reference denote like parts in the respective figures.

Referrfng'to Figs. 1,2, 8, 4, and 5, a represents' one end andthe adjacent portion of a metallic car underframe lembodying my imfprovement and comprising in the present "case, two opposite longitudinal side sills 1, an end sill 2 havin the dead-bock 2 and `fixed at its ends to t e corresponding ends of the side sills 1, body-bolster b iixedatits ends to the side sills 1 adjacent to the end sill 2 and secured to the latter' by two opposite horizontal braces 3 which converge from the body-bolster b, one on each side of and at a suitable distance from the longitudinal center of the underframc a, to the end sill 2 at its middle ortion, anda single longitue dinal centers l o'which is adapted to butt endwies against the rear side of the bodybolster b to Which it is fixed as hereinafter more 'particularly referred to, the body-bol ster b and center sill c being res ectively preferaby com osed of cast steel) integral throughout an I-shaped in cross section as shown.

d represents the car draft-gearwhich may be of any suitable ty e, preferably as shown and similar to that dlescribed in the United States Letters Patent granted to me January 23, 1906, Number 810,805, for improvement in draft-gear for railroad cars, except that in carrying out my invention the draft ear is applied directly to the center sill c in ieu of to the body-bolster as in the said patent for which purpose the end of the center sill c is closed, or formed transversely, with an uplright rectangular-shaped en( -plate 4 W ich unites with the top and bottom ianves 5, 5, and web 6 of the center sill c, an is adapted to butt at its outer face against the web 7 of the body-bolster b, and to close the inner ends of the housing'sxor openings therethrough for the play ofthe bufling springs of the draft-gear as hereinafter more particularly described, the adjacent portionsof the bottom flanges 5 of the sill c being preferably widened, according to the lateral extension of the end-plate 4 beyond the body of the center sill c, and adapted to be supported thereat on the bottom flange 8 of the bodybolster b to which it is rigidly securedYA by rivets (or bolts) 9, the end-plate 4 being also` fixed to the Web 7 by rivets. l

The 'draft-gear d in the present case, coniprises the draw-bar e having a horizontally arranged, cross-head 10 at its inner or reanend, in the face of which opposite'to the front side of the body-bolster b, is formed at each side of the longitudinal center of the underframe a, and `center sill c, a cylindrical housing or pocket 11', While through the web 7 of the body-bolster l), opposite to and in central longitudinal alinement with each housing 11, is preferably formed atubular housing or opening 1,1 which is closed at its inner end, or rear side of the bolster b, bythe end-plate 4 of the center sill c, as before men- ,tioned, the housings 11,11', beingin the same horizontal plane with each lother. Within the housings 11, 11, are laced the -bufling springs 12 which in t e normal position of -the draft-gear d, bear at their or. openinor 16 through its web. 6 adjacent the center sill c, and at the Sametime release the yokeffroin the draft-springs 18 whichL lie yidle Within their housings 17, 17.

the operation of the draftgear applied therearni 14 of a yoke f Which is arranged horicenter sill c from its rear side, the arms 14 being slidable through openings 15 'formed therefor transversely through the Web 7 of -inner or front ends against bottom of the outeiior front VYnur gainst the bottoni of the i housingsill-l'vg iwiraW-bar c, 10) and at their inner or rear ends against the end-plato 4 of the center sill c. l

To the cross-head 10, atvor adjacent to each end thereof, is coupled by a pin 13the zontally in the plane oi' the draw-bar c and adapted to straddle the end plate 4 of the the body-bolster b, and thecenter sill c hav 'ing an elongated longitudinal lightening hole to the en late 4 for enabling the yoke f to be assem led and removed, and for permitting free play thereto at all times in the operation of the draft-gear al.

On the inner or rear side of the end-plate 4, at each side of the longitudinal center of the underfraine a and Web 6 of the center sill v c,'is formed a cylindrical housing or pocket 17 While on (or'in) the face ofv the yoke f opposite to each housing 17, is formed a' similar' housing 17 the housings 17, 1,7', being in central longitudinal alinernent with each other and preferably, With the housings. 11, 11. Within the housings 17, 17, are placed the draft7 springs 18 which .in the norinal position of the draft-gear d bear at their outer or rear ends against the bottoni ofthe housings 17 (or yokef), and at their housings 17, or inside of the end-plate 4 of the center sill c.

in operation, when pulling on the drawbar e, the yoke f is drawn forward, and in so doing compresses the draft-springs 18 between the yokef .and the end-plate e of the center sill c on its rear side and simultae neously releases the head 10 of the draW-bar e froin the bung-springs 12 Which lie free Within 'their housings 11, 11'.. In bufhng, the draw-bar e With its headlO is forced @can Ward so as to com ress the bung-springs 12 against the face o the end-plate 4, or end of,

Byinyinven'tion the pressure of the springs 12 and 18 is applied initially and directly to the center sill c instead of to the body-.bolster as in the said patent, and thereby increases the rigidity and resistance Vand insures the rnaXiinuin strength of the underfraine c in the operation of the draft-gear or When subject-ed to abnormal end stress. l It is here noted-.that the other end and adjacent pon tionfofithe underfraine a not shownon the drawing being -siniilail in construction, and in to,. no further description thereof is needed. In the modalisation of my improvement shown in Fig. 6, the housings or openings 11 for the landing-springs (not shown) are not forined entirely through, 'but are closed at their inner or rear ends by the web 7 of the body-bolster instead of by the end-plate i oi the center sill c, whereby the pressure of the birding-springs is applied directly to the iront side or web 7 of the bolster t instead of to the center sill c as above described, and

the stress 'of thgdraitfsprings only, applied directly to the center sill c, and in this case also the end-plate 4. is fired, to the said closing parts oi the web .7 by rivets (or. bolts) 19 in addition. to the rivets 9 before described.

ln the inodication shown in Fig. 7, the housings 1 1 for the birding-springs are formed entirely on the face of the end-plate 4 of the center sill c and project forward therefrom through openings 2() formed therefor trans'- versely through the web 7, the pressure of the hurling and draft springs respectively, being applied directly to the center sill c as previously described.

What l claim as niy invention and desire to secure by Letters latent is z- 1. in ainetallic car underfraine, lthe coinbination of the body-bolsters having respectively, an opening transversely. therethrough on eachside of the longitudinal center of the underfraine adapted to iorin a housing for the birthing-spring of a suitable draft-gear, a center sill extending longitudinally between the bodyQbolsters, an upright plate orining part of the said sill across each end thereof adapted to butt on its front side against the corresponding body-bolster and to close the said openings therethrough. housings for the draft-springs ofthe said gear on the rear side of the said plate, the said birding and lOl) drait" springs being adapted to bear at their inner ends against the frontend rear.

end thereof and adapted'to butt against the' corresponding body-bolster, a housing pro- ]ecting frein the front side oi" the said plate through the said opening, for the bufiing spring of a suitable draft-gear, housings for the draft-springs oi the said gear on the rear iio l sideof the said plate, the said buiiing and n draft springs being adapted to bear at their inner ends against the iront and rear sides respectively, of the saidl plate Within -he said housings, and ineans for fixing the said siiltootlie body-holsters, substantially as described.

sill having an upright A)late across each end thereofadapted on each side for the application thereto of a suitable draft-gear, the said plate forming a. component part of the sill, substantially as described.

4. As anew article of manufacture, a -car -si'llhaving 'au upright plate across each end thereof adapted on each side for the applicav, tion thereto o a suitable draft-gear, su bstantially as described. A 5. As an article ofmanufacture, a car sill having means integral therewith for the apgear, substantially as described.

. lu a car underframe, the combination of a body-bolster, and a sill having means i11- tegral therewith for the applicationv thereto of a suitable draft-gear, substantially as described.

HARRY M. PFLAGER.

Witnesses:

HAL BELLVILLE, EDWARD W. FURRELL. 

